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This means that the two humps shown in the distribution will be centered on the red and white phenotypes.Many pathogenic bacteria species are becoming resistant to antibiotics.A good introduction should identify your topic, provide essential context, and indicate your particular focus in the essay. A strong conclusion will provide a sense of closure to the essay while again placing your concepts in a somewhat wider context.
Since no two essays are the same, no single formula will automatically generate an introduction and conclusion for you.
But the following guidelines will help you to construct a suitable beginning and end for your essay.
Pink flowers may be the average phenotype, but if we start to remove red flowers from the population, the “mean” phenotype will be shifted toward white flowers.
In disruptive selection, the average phenotype is selected against.
Most of the advice in this handout pertains to argumentative or exploratory academic essays.
Be aware, however, that different genres have their own special expectations about beginnings and endings.Explain how such adaptations can develop through the process of natural selection.(Hint: Relate this example to the conditions that are necessary for natural selection to occur.) Antibiotic resistance is the ability of a microorganism to withstand the effects of an antibiotic. Antibiotic resistance evolves naturally via natural selection through random mutation, but it could also be engineered by applying an evolutionary stress on a population.What are the major evolutionary trends that developed among major vertebrate groups, specifically those that allowed for the transition from aquatic to terrestrial life?Introductions and conclusions play a special role in the academic essay, and they frequently demand much of your attention as a writer.Compare and contrast directional selection and disruptive selection, and provide an example of each. In directional selection, the distribution of phenotypes forms a “bell curve.” Selection against one of the extreme phenotypes causes the distribution to move in one direction or the other.An example might be plants whose flower color is determined by incomplete dominance: white, pink, or red.It informs readers about the topic and why they should care about it, but also adds enough intrigue to get them to continue to read.In short, the opening paragraph is your chance to make a great first impression.Antibiotic resistance is a consequence of evolution via natural selection.The antibiotic action is an environmental pressure; those bacteria which have a mutation allowing them to survive will live on to reproduce.